Electrocatalytic regeneration of atmospherically aged MoS2 nanostructures via solution-phase sulfidation


The performance of MoS2 as a hydrogen evolution catalyst is diminished by exposure to air. We demonstrate a solution phase technique to resulfidate MoSxO2-x using Na2S2O3. The success of the method was judged by performance as a H+ reduction catalyst. Following sulfidation samples displayed a favourable decrease in both onset potential and Tafel slope, with the best decreasing from -0.23 V to -0.18 V (vs. SHE), and 282 mV dec-1 to 87 mV dec-1 respectively. Ageing studies indicate that this method may be used to recycle the MoS2 repeatedly without losing catalytic performance, although repeated sulfidation did result in homogenisation of the nanostructure.

Publication DOI: https://doi.org/10.1039/c6ra03326a
Divisions: College of Engineering & Physical Sciences > School of Infrastructure and Sustainable Engineering > Chemical Engineering & Applied Chemistry
College of Engineering & Physical Sciences > Energy and Bioproducts Research Institute (EBRI)
Additional Information: This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. Funding: EPSRC Electronic supplementary information (ESI) available. See DOI: 10.1039/c6ra03326a
Uncontrolled Keywords: Chemical Engineering(all),Chemistry(all)
Publication ISSN: 2046-2069
Full Text Link: http://pubs.rsc ... 6A#!divAbstract
Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Article
Published Date: 2016
Published Online Date: 2016-03-04
Accepted Date: 2016-03-04
Submitted Date: 2016-02-04
Authors: Burch, H.A.
Isaacs, M.
Wilson, K. (ORCID Profile 0000-0003-4873-708X)
Palmer, R.E.
Rees, N.V.



Version: Published Version

License: Creative Commons Attribution

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